A(nonrotating) star collaps onto from an initial radius `R_(i)` with its mass remaining unchanged. Which curve in figure best gives the gravitational acceleration `a_(g)` on the surface of the star as a function of the radius of the star during the collapse?

Options

A. a
B. b
C. c
D. d

Answer

B

Explanation

g `prop (1)/(R^(2))`
R decreasing g increase hence, curve b represents correct variation.